There is another file of cities with ZIP codes and states
in this directory, but it was typed in wrong. Some cities
in New Jersey are labeled as being in New York. However the
ZIP codes are right. Since the cities in New Jersey are
exactly those with zip codes beginning 07, if you
can execute the substitute command to change NY to NJ on all
lines with " 07" in them, all will be well.
Don't forget the blank before the 07 - some ZIP
codes have "07" in the middle, remember.
Change file "cities" and rewrite it. Then type "ready".